Tuning of SWCNT-IR Detectors, Using Small Percents of Uniaxial and Torsional Strains

Using a third neighbor TB (Tight-Binding) approximation the effect of small percents of uniaxial strain (Tensile) and torsional strain on the band gap of Single Walled Carbon Nanotube is studied. It is shown that; under the above mentioned two kinds of strains, the moderate band gap SWCNT can have a wider or narrower band gap. In addition, it is shown that a metallic SWCNT can have a narrow band gap by application of small percents of strains. The model of TB which is the base of this study is unique

Keywords:

Carbon Nanotube , Tight- Binding approximation , Tensile , Torsion